cornerstone Syllabification: (cor·ner·stone)Pronunciation: /ˈkôrnərˌstōn/Translate cornerstone | into French | into German | into Italian | into Spanish Definition of cornerstone noun a stone that forms the base of a corner of a building, joining two walls. an important quality or feature on which a particular thing depends or is based:a national minimum wage remained the cornerstone of policycornerstone in other Oxford dictionaries Definition of cornerstone in the British & World English dictionary
